FOAF extractor is similar to Wandora's RDF import but defines base names and role topics for FOAF vocabulary terms and relations. While RDF import does not set base names and uses generic association roles (subject and object), FOAF extractor recognizes FOAF terms and sets a predefined base name for each FOAF term. Likewise, FOAF extractor recognizes FOAF relations and uses predefined and relation specific roles in association created from the relation.